46 



Antemuc of Imeds. 



leaving the point projecting for an inch or more. With one of 

 these in each hand commence operations. Tlie head may he 

 either side v.p. Much may be learned in dissecting hirge in- 

 sects even -with no glass ; but in all cases, and e^specially in 

 small insects, a good lens will be of great value. The best lens 

 is one of ToUes', sold by Mr. Stoddard of the Boston optical 

 ■works. These are very excellent and thus high priced, costing 

 $14.00 a lens. 



The Coddington lens, mounted in German silver, is nearly 

 as good. These are imported from England. They can be 

 procured of any optician, and only cost 12.00. These lenses 

 can be mounted in a convenient stand (Fig. 8) which may be 



Fig. 8. 



Microscope mounted for Dlsscctiiir/. 



made in twenty minutes. I think one of these more valuable 

 than a large compound microscope, which costs many times as 

 much. Were I obliged to part with eitlier, the latter would go. 



I require my students to do a great deal of dissecting, which 

 they enjoy very much and find very valuable. I would much 

 rather that my boy should become interested in such study, 

 than to have him possessor of infinite gold rings, or even a hug& 

 gold watch, with a tremendous charm. Let such pleasing rec- 

 reation gain the attention of our boys, and they will ever con- 

 tribute to our delight and not sadden us with anxiety and fear. 



The antennffi (Fig. 7, a, a) are the horn-like jointed organs 

 situated between or below and in front of the large compound 



